CREATE EXTENSION xml2;
select query_to_xml(
'select 1 as x' ,
true ,
false ,
'' );
select xslt_process( query_to_xml(
'select x from generate_series(1,5) as
x
',true,false,' ')::text,
$$<xsl:stylesheet version=
"1.0"
xmlns:xsl=
"http://www.w3.org/1999/XSL/Transform " >
<xsl:output method=
"xml" indent=
"yes" />
<xsl:template
match =
"*" >
<xsl:copy>
<xsl:copy-of
select =
"@*" />
<xsl:apply-templates />
</xsl:copy>
</xsl:template>
<xsl:template
match =
"comment()|processing-instruction()" >
<xsl:copy />
</xsl:template>
</xsl:stylesheet>
$$::text);
CREATE TABLE xpath_test (id
integer NOT NULL , t xml);
INSERT INTO xpath_test
VALUES (
1 ,
'<doc><int>1</int></doc>' );
SELECT *
FROM xpath_table(
'id' ,
't' ,
'xpath_test' ,
'/doc/int' ,
'true' )
as t(id
int4 );
SELECT *
FROM xpath_table(
'id' ,
't' ,
'xpath_test' ,
'/doc/int' ,
'true' )
as t(id
int4 , doc
int4 );
DROP TABLE xpath_test;
CREATE TABLE xpath_test (id
integer NOT NULL , t text);
INSERT INTO xpath_test
VALUES (
1 ,
'<doc><int>1</int></doc>' );
SELECT *
FROM xpath_table(
'id' ,
't' ,
'xpath_test' ,
'/doc/int' ,
'true' )
as t(id
int4 );
SELECT *
FROM xpath_table(
'id' ,
't' ,
'xpath_test' ,
'/doc/int' ,
'true' )
as t(id
int4 , doc
int4 );
create table articles (article_id
integer , article_xml xml, date_entered date);
insert into articles (article_id, article_xml, date_entered)
values (
2 ,
'<article><author>test</author><pages>37</pages></article>' , now());
SELECT *
FROM
xpath_table(
'article_id' ,
'article_xml' ,
'articles' ,
'/article/author|/article/pages|/article/title' ,
'date_entered > ' '2003-01-01' ' ' )
AS t(article_id
integer , author text, page_count
integer , title text);
-- this used to fail when invoked a second time
select xslt_process(
'<aaa/>' ,$$<xsl:stylesheet version=
"1.0"
xmlns:xsl=
"http://www.w3.org/1999/XSL/Transform " >
<xsl:template
match =
"@*|node()" >
<xsl:copy>
<xsl:apply-templates
select =
"@*|node()" />
</xsl:copy>
</xsl:template>
</xsl:stylesheet>$$)::xml;
select xslt_process(
'<aaa/>' ,$$<xsl:stylesheet version=
"1.0"
xmlns:xsl=
"http://www.w3.org/1999/XSL/Transform " >
<xsl:template
match =
"@*|node()" >
<xsl:copy>
<xsl:apply-templates
select =
"@*|node()" />
</xsl:copy>
</xsl:template>
</xsl:stylesheet>$$)::xml;
create table t1 (id
integer , xml_data xml);
insert into t1 (id, xml_data)
values
(
1 ,
'<attributes><attribute name="attr_1">Some
Value</attribute></attributes>
');
create index idx_xpath
on t1 ( xpath_string
(
'/attributes/attribute[@name="attr_1"]/text()' , xml_data::text));
SELECT xslt_process(
'<employee><name>cim</name><age>30</age><pay>400</pay></employee>' ::text, $$<xs
l:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform " version="1.0" >
<xsl:output method="xml" omit-xml-declaration="yes" indent="yes" />
<xsl:strip-space elements="*" />
<xsl:param name="n1" />
<xsl:param name="n2" />
<xsl:param name="n3" />
<xsl:param name="n4" />
<xsl:param name="n5" select ="'me'" />
<xsl:template match ="*" >
<xsl:element name="samples" >
<xsl:element name="sample" >
<xsl:value-of select ="$n1" />
</xsl:element>
<xsl:element name="sample" >
<xsl:value-of select ="$n2" />
</xsl:element>
<xsl:element name="sample" >
<xsl:value-of select ="$n3" />
</xsl:element>
<xsl:element name="sample" >
<xsl:value-of select ="$n4" />
</xsl:element>
<xsl:element name="sample" >
<xsl:value-of select ="$n5" />
</xsl:element>
<xsl:element name="sample" >
<xsl:value-of select ="$n6" />
</xsl:element>
<xsl:element name="sample" >
<xsl:value-of select ="$n7" />
</xsl:element>
<xsl:element name="sample" >
<xsl:value-of select ="$n8" />
</xsl:element>
<xsl:element name="sample" >
<xsl:value-of select ="$n9" />
</xsl:element>
<xsl:element name="sample" >
<xsl:value-of select ="$n10" />
</xsl:element>
<xsl:element name="sample" >
<xsl:value-of select ="$n11" />
</xsl:element>
<xsl:element name="sample" >
<xsl:value-of select ="$n12" />
</xsl:element>
</xsl:element>
</xsl:template>
</xsl:stylesheet>$$::text, 'n1="v1",n2="v2",n3="v3",n4="v4",n5="v5",n6="v6",n7="v7",n8="v8",n9="v9",n10="v10",n11="v11",n12="v12"' ::text);
-- xpath_nodeset()
SELECT xpath_nodeset(article_xml::text, '/article/author|/article/pages' )
FROM articles;
SELECT xpath_nodeset(article_xml::text, '/article/author|/article/pages' ,
'item_without_toptag' )
FROM articles;
SELECT xpath_nodeset(article_xml::text, '/article/author|/article/pages' ,
'result' , 'item' )
FROM articles;
-- xpath_list()
SELECT xpath_list(article_xml::text, '/article/author|/article/pages' )
FROM articles;
SELECT xpath_list(article_xml::text, '/article/author|/article/pages' , '|' )
FROM articles;
-- possible security exploit
SELECT xslt_process('<xml><foo>Hello from XML</foo></xml>' ,
$$<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform "
xmlns:sax="http://icl.com/saxon "
extension-element-prefixes="sax" >
<xsl:template match ="//foo" >
<sax:output href="0wn3d.txt" method="text" >
<xsl:value-of select ="'0wn3d via xml2 extension and libxslt'" />
<xsl:apply-templates/>
</sax:output>
</xsl:template>
</xsl:stylesheet>$$);
-- empty output
select xslt_process('<aaa/>' ,
$$<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform " >
</xsl:stylesheet>$$);
Messung V0.5 in Prozent C=91 H=93 G=91
¤ Dauer der Verarbeitung: 0.17 Sekunden
(vorverarbeitet am 2026-09-27)
¤
*© Formatika GbR, Deutschland